KR20130110404A

KR20130110404A - Door frame

Info

Publication number: KR20130110404A
Application number: KR1020120032358A
Authority: KR
Inventors: 방영식
Original assignee: 방영식
Priority date: 2012-03-29
Filing date: 2012-03-29
Publication date: 2013-10-10

Abstract

PURPOSE: A door frame is provided to prevent a corner from being damaged due to impact, and backing paper is not torn when bent as the corner is not sharp. CONSTITUTION: A door frame includes a rectangular inner plate and a thin cover plate enclosing both sides of the inner plate. A pair of V-shaped grooves of which the angle is 45° is formed on the rear surface of the cover plate at each point meeting corners of the inner plate. A flat cut-off surface is formed on the outside of the cover plate. A finishing foil is attached to the surface of the cover plate as a decorating paper. A synthetic resin film is attached to the surface of the cover plate to prevent the corner from being damaged before the finishing foil is attached.

Description

Door frame {DOOR FRAME}

The present invention relates to a door frame, and more particularly, to a door frame having a flat chamfered surface is formed in the corner, as well as a structure that can be decorated by attaching a finishing foil (damage foil) to the surface without damage.

A door frame is a door storage structure that is installed on a wall or a structure to install a door of a building entrance, a door of an interior chamber of a building, a door of a veranda, a door of a furniture such as a built-in cabinet, and a window.

As the interior function of the door is emphasized recently, the interior function of the door frame is correspondingly emphasized. The door frame is conventionally made of wood such as solid wood or aggregated wood, or metal such as aluminum or steel, but in recent years, especially plywood board, MDF board, high density board It is made of plates such as HDF boards and particle boards, and plated sheets attached to the surface thereof.

Background Art Conventionally, a method of forming a V-shaped groove having an angle of 90 ° in a plate has been used in order to change the traveling direction of the plate to be perpendicular. Examples are shown in FIGS. 1A-1D. As shown in FIGS. 1A to 1D, in forming the door frame according to the related art, the plate 5 is formed by forming the V-shaped grooves 4a, 4b, and 4c having an angle of 90 ° through V-cutting. Wrapped around or made a nested board. The reason why the V-shaped grooves 4a, 4b and 4c are formed to have an angle of 90 degrees is to bend the plate in the direction about the bottom of the V-shaped grooves 4a, 4b and 4c. 1A and 1B show a structure in which a 90 ° V groove 4a is formed on the plate 1 to surround the plate 5, and the example shown in FIGS. 1C and 1D is 90 ° to the plate. By forming two V-shaped grooves 4b and 4c in succession, the overlapping plate structure overlapping the plate is shown. The door frame structure and manufacturing method using the V-shaped grooves 4a and 4b are disclosed in detail in Korean Utility Model Publication No. 20-0177660 and Japanese Utility Model Publication No. 51-21233. The plate 1 disclosed in these prior art first attaches the pattern layer 2 to the lower portion of the V-shaped grooves 4a, 4b and 4c, and attaches the synthetic resin sheet 3a to the surface of the pattern layer 2.

However, when forming the 90-degree V-shaped grooves (4a, 4b) to bend the plate 90 in this way, the plate is bent around the bottom of the V-shaped grooves (4a, 4b) and then sharp at the bottom of the V-shaped grooves (4a, 4b) The edges 6a and 6b are easily formed, so that the patterned layer 2 and the synthetic resin sheets 3a and 3b are easily torn, and the edges are damaged even when a small impact is applied to the edges. If the pattern layer 2 is made of paper, and the pattern layer 2 is first attached and the synthetic resin sheet 3a is attached to the surface thereof as shown in FIG. 1A, the damage is more severe. In addition, when the edges are sharply formed, it is difficult to handle the door frame, and it is difficult not only to reduce safety even after installation, but also to produce a good aesthetic appearance.

When the door frame is molded into wood boards such as medium density fiber boards, high density fiber boards, and solid wood boards, these boards are cut to fit the door frame structure, and the surface is sanded to remove impurities. After sanding again, the surface is smoothed and finally finished with a transparent lacquer or the like. However, since the sanding process and the painting process are difficult to automate, the productivity of the door frame manufactured by this method is very low, and the price is too high.

Therefore, recently, melamine-impregnated toilet paper impregnated with melamine on a pattern-printed paper has been used as a surface protective layer or pattern layer such as medium density fiberboard (MDF), plywood, and particle board (PB). This is because when the door frame is formed from a medium density fiber board, a high density fiber board, a plywood, and the surface is treated with these toilet papers, the surface treatment can be performed at a relatively low cost. The door frame using melamine impregnated toilet paper is thermo-formed by laminating melamine impregnated toilet paper on the plate or backing of the door frame, or by stacking melamine impregnated toilet paper and melamine impregnated (transparent) overlay paper. However, the door frame manufactured by this method, when the melamine impregnated toilet paper is attached to the right angle of the plate or the plate of the door frame, there was a disadvantage that is easily damaged at the corner portion during the attachment process as described above. Melamine impregnated toilet paper is torn well before being heat cured by the hot plate, and the edges of the plate or the plate are at right angles. In addition, when folding the melamine-impregnated toilet paper along the edges and thermally curing, melamine bleaching (white stripes) may appear at the corners due to poor heat curing of melamine at the corners. do.

The present invention was made to solve the problem of the door using the V-shaped groove, while the first problem to be solved in the present invention to form a door frame using the V-shaped groove, the edge is not sharp when the bend is not torn when bent, It is to provide a door frame of the structure that the edge is not damaged even if an impact is applied after the molding.

The second problem to be solved by the present invention is to provide a door frame that is easy to handle the door frame by forming a flat surface in the corner portion, not only does not damage the human body even after installation, but also gives a soft aesthetic appearance.

The third problem to be solved by the present invention is to provide a door frame that can prevent the surface decorative paper from being damaged during the attachment of the surface decorative paper, or the occurrence of whitening or flaw on the surface decorative paper after the surface decorative paper is attached.

The fourth problem to be solved by the present invention is to provide a door frame that can prevent the penetration of the moisture or water that can cause deformation of the plate.

The first and second objects of the present invention described above, in a door frame including a plate having a rectangular cross section and a thin plate completely covering both sides of the plate, the point that meets the edge of the plate on the back surface of the plate It is solved by forming a pair of V-shaped grooves having an angle of 45 ° along the direction of the plate edge each successively so that a flat chamfered surface is formed on the outside of the plate when the plate covers the edge of the plate.

The third and fourth objects of the present invention described above attach a finishing foil to the surface of the plate as a decorative paper, but before attaching the finishing foil, the synthetic resin film is bonded to the surface of the plate, and the fish is exposed at the corners. This is solved by preventing the sing foil from breaking and being damaged.

According to the present invention having the above-described configuration, in order to bend in the 90 ° direction of the plate, the angle of the corner is obtuse by using 45 ° V-shaped grooves continuously formed without using a single 90 ° V-shaped groove. It can be made, and the chamfered surface is formed in the corner portion is flat, the edge is not sharp, the back ground is not torn when bent, and the edge is not damaged even if the impact is applied after molding. In addition, according to the present invention, a flat chamfered surface is formed at the corner portion to facilitate handling of the door frame, ensuring safety in use even after installation of the door frame, and also has an effect of providing a soft aesthetic appearance. In addition, according to the present invention, by using a finishing foil and attaching a synthetic resin film therein before attaching the finishing foil, there is no fear of whitening or scratches at the corners, and prevents moisture or moisture from being absorbed into the plate. It is also effective to prevent the door frame is deformed.

1A to 1D are cross-sectional views illustrating various methods of forming a plate by forming a V groove by a conventional V cutting.
Figure 2 is a perspective view of the plate of the door frame according to the invention.
3 is a developed view of the plate of the door frame according to the present invention.
4 is a manufacturing process diagram of the plate shown in FIG.
5 is an assembly view of the door frame according to the present invention.
6 is a plan sectional view of the door frame shown in FIG.

Hereinafter, with reference to the accompanying drawings a specific embodiment of the door frame according to the present invention will be described in detail.

As shown in Figures 2 and 3, the door frame according to the present invention includes a plate 11 having a rectangular cross-section and a thin plate 13 completely surrounding both sides of the plate (11). Plywood is preferably used for the plate and the plate, but medium density fiber board (MDF), high density fiber board (HDF) or particle board may be used.

As shown in FIGS. 4 to 6, a feature of the present invention is an angle of 45 ° along the edge of the plate 11 at each point where it meets the edge of the plate 11 on the back surface of the plate 13. The pair of excitation V-shaped grooves 19 are formed in succession so that the flat chamfered surface 23 is formed on the outside of the plate 13 when the plate 13 covers the edge of the plate 11.

As shown in FIG. 4, the cover plate 13 attaches a synthetic resin film 17 to the lower portion of the plate 15, and forms two continuous V-shaped grooves 19 each having a 45 ° angle, and the synthetic resin film (17) The finishing foil 21 is attached to the surface. That is, another feature of the present invention, while attaching the finishing foil (finishing foil) 21 as a decorative paper on the surface of the plate 13, the plate forming the plate 13 before attaching the finishing foil 21 ( The resin film is first bonded to the surface of 15) to prevent damage to the fishing foil 21 at the corners.

The finishing foil 21 according to the present invention is dried by impregnating acrylic resin in a thin pulp paper on a film, and coated with a racker on the surface of the dried acrylic resin impregnated paper. As the acrylic resin impregnated with the pulp paper, ethyl ester resin or butyl ester resin is used. These resins are very useful for surface treatment of angled door frames as in the present invention because they provide not only moisture resistance and oil resistance but also a range of elasticity in the state impregnated with pulp paper. The printing layer may be further formed on the surface of the acrylic resin impregnated paper by printing a pattern having a predetermined color and shape before or after impregnation. The racker uses a mixture of known thermosetting resins. It is preferable to heat-treat the coated racker in advance at a temperature of 130 ° C. to 140 ° C. which is a heating temperature at the time of low pressure lamination. The finishing foil 21 is attached to the synthetic resin film surface 15 by an adhesive.

As shown in FIGS. 5 and 6, for bending the 90 ° direction of the plate 13, the angle of the corners may be adjusted by using a continuous 45 ° V groove formed without using a single 90 ° V groove. It can be obtuse, the chamfered surface 23 is formed in the corner portion flat, the edge is not sharp, the synthetic film 17 and the finishing foil 21 is not torn when bent, the impact is applied after molding Even the edges are not easily damaged.

The synthetic resin film 17 may also be attached to the surface of the plate 11 for a moisture proof and waterproof effect.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited thereto. Should be determined.

11: plate 13: plate
15: plate 17: synthetic resin film
19: V-shaped groove 21: Finishing foil
23: chamfer

Claims

In the door frame comprising a plate having a rectangular cross section and a thin plate completely surrounding both sides of the plate,
On the back surface of the plate, a pair of V-shaped grooves having an angle of 45 ° along the plate edge direction is formed in successive pairs at every point where the edges of the plate meet, so that the flat plate is chamfered on the outside of the plate when the plate covers the edge of the plate. The door frame characterized in that the surface is formed.

The method of claim 1,
Finishing foil (finishing foil) is attached to the surface of the plate as a decorative paper, bonded to a synthetic resin film on the surface of the plate before attaching the finishing foil, the door frame prevented from being damaged while bending the finishing foil at the corners.